new engine design
Pictured here (hopefully) is my new prototype engine about 50% completed, this is a twin HP design with Joy's valve gear. There are no castings involved the iron parts being machined from cast bar. The bedplate is made up from three laser cut plates. I have not done much on this lately as I am concentrating on finishing the first Elliott bay triple expansion engine.

Wow thats a very, very purty motor.. I figure to build my first steam launch engine real soon..Will be tough to do nicer than that one right there :lol: . More pictures please? :-)

The Joy valve gear is an interesting choice. What is the bore x stroke? Bill57

bore & stroke
the prototype is 58 x 64mm but I have drawings for 64 x 72 and 75 x 82mm (both with three bearing crankshafts) jack